CCS811B-JOPD

CCS811 Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality

Manufacturer

unknown

Overview

Part: CCS811 from ams

Type: Ultra-Low Power Digital Gas Sensor

Key Specs:

Supply Voltage (VDD): 1.8V to 3.3V
Average Supply Current (1.8V): 0.7 mA (over pulse cycle)
Sleep Mode Supply Current (1.8V): 19 µA
Power Consumption (Mode 1 & 4, 1.8V): 46 mW
Operating Ambient Temperature: -5 °C to 50 °C
Package Dimensions: 2.7mm x 4.0mm x 1.1mm

Features:

Integrated metal oxide (MOX) gas sensor
Integrated microcontroller unit (MCU) with ADC
I²C digital interface
ams unique micro-hotplate technology
Intelligent algorithms for TVOC or equivalent CO2 (eCO2) levels
Multiple measurement modes optimized for low-power consumption
On-board processing
Optimised low-power modes
Low component count
Proven technology platform (>5 years lifetime)

Applications:

Smart phones
Wearables
Home and Building automation
Accessories

Package:

LGA: 2.7mm x 4.0mm x 1.1mm, 0.6mm pitch

Features

The benefits and features of CCS811, Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality are listed below:

Figure 1: Added Value of Using CCS811 Sensor

Benefits	Features
• Manages the sensor drive modes and measurements while detecting VOCs	• Integrated MCU
• Provides eCO2 level or TVOC indication with no host intervention	• On-board processing
• Simplifies the hardware and software integration	• Standard I²C digital interface
• Extend battery life in portable applications	• Optimised low-power modes
• Suitable for small form-factor designs	• 2.7mm x 4.0mm x 1.1mm LGA package
• Saves up to 60% in PCB footprint	• Low component count
• Designed for high volume and reliability (>5years lifetime)	• Proven technology platform

Applications

This device can be mainly used for indoor air quality monitoring in:

• Smart phones
• Wearables
• Home and Building automation
• Accessories

Pin Configuration

Figure 3: Pin Diagram

Pin Diagram: The Exposed Pad is underneath

Figure 4: CCS811 LGA Pin Assignment

Pin No.	Pin Name	Description
1	ADDR	Single address select bit to allow alternate address to be selected • When ADDR is low the 7 bit I²C address is decimal 90 / hex 0x5A • When ADDR is high the 7 bit I²C address is decimal 91 / hex 0x5B.
2	nRESET	nRESET is an active low input and is pulled up to VDD by default. nRESET is optional but external 4.7KΩ pull-up and/or decoupling of the nRESET pin may be necessary to avoid erroneous noise-induced resets.
3	nINT	nINT is an active low optional output. It is pulled low by the CCS811 to indicate end of measurement or a set threshold value has been triggered.
4	PWM	Heater driver PWM output. Pins 4 and 5 must be connected together.
5	Sense	Heater current sense. Pins 4 and 5 must be connected together.
6	VDD	Supply voltage
7	nWAKE	nWAKE is an active low input and should be asserted by the host prior to an I²C transaction and held low throughout.
8	AUX	Optional AUX pin which can be used for ambient temperature sensing with an external NTC resistor. If not used leave unconnected.
9	SDA	SDA pin is used for I²C data. Should be pulled up to VDD with a resistor
10	SCL	SCL pin is used for I²C clock. Should be pulled up to VDD with a resistor
EP	Exposed Pad	Connect to ground

Electrical Characteristics

Figure 6:

Electrical Characteristics

Parameters	Conditions	Min	Typ (6)	Max	Units
Supply Voltage (VDD) (1), (2)		1.8		3.3	V
	During measuring at 1.8V		26		mA
Supply Current (IDD) (3)	Average over pulse cycle(3) at 1.8V		0.7		mA
	Sleep Mode at 1.8V		19		μA
	Idle Mode 0 at VDD= 1.8V		0.034		mW
	Mode 1 & 4 at VDD= 1.8V		46		mW
Power Consumption	Mode 2 at VDD= 1.8V		7		mW
	Mode 3 at VDD= 1.8V		1.2		mW
Logic High Input (5)	nRESET, nWAKE, ADDR	VDD - 0.6		VDD	V
Logic Low Input (5)	nRESET, nWAKE, ADDR	0		0.6	V
Logic High Output	nINT	VDD - 0.7			V
Logic Low Output	nINT			0.6	V
Analogue Input	AUX	0		VDD	V

Note(s):

1. The supply voltage VDD is sampled during boot and should not vary during operation
2. The maximum VDD ramp time for Power On is 3ms
3. Typical values for 1.8V supply voltage (VDD)
1. Average Supply Current (IDD) for a sensor measurement once every 60 seconds
5. For SDA and SCL timing refer NXP I²C – bus specification and user manual UM10204
6. Typical values at 25°C and 50% RH

Figure 7: Timing Characteristics

Parameters	Conditions	Min	Typ (6)	Max	Units
Supply Voltage (VDD) (1), (2)		1.8		3.3	V
Supply Current (IDD) (3)	During measuring at 1.8V		26		mA
	Average over pulse cycle (3) at 1.8V		0.7		mA
	Sleep Mode at 1.8V		19		µA
Power Consumption	Idle Mode 0 at VDD= 1.8V		0.034		mW
	Mode 1 & 4 at VDD= 1.8V		46		mW
	Mode 2 at VDD= 1.8V		7		mW
	Mode 3 at VDD= 1.8V		1.2		mW
Logic High Input (5)	nRESET, nWAKE, ADDR	VDD - 0.6		VDD	V
Logic Low Input (5)	nRESET, nWAKE, ADDR	0		0.6	V
Logic High Output	nINT	VDD - 0.7			V
Logic Low Output	nINT			0.6	V
Analogue Input	AUX	0		VDD	V

Note(s):

1. nWAKE should be asserted prior to and during any I²C transaction

2. Up to 70ms on the first Reset after new application download

Absolute Maximum Ratings

Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated under Electrical Characteristics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability

Figure 5: Absolute Maximum Ratings

Symbol	Parameter	Min	Max	Units	Comments
		Electrical Parameters
VDD (1)	Supply Voltage	1.8(2)	3.6	V
IDD	Supply Current		30	mA	In mode 1
P	Power Consumption		60	mW	In mode 1
		Electrostatic Discharge
ESDHBM	Human Body Model		±2000	V
		Environmental Conditions
TAMB	Ambient Temperature for Operation	-5	50	°C
TSTRG	Storage Temperature	-40	125	°C
RHNC	Relative Humidity (non-condensing)	10	95	%
MSL	Moisture Sensitivity Level		1		Unlimited max. floor life time

Note(s):

1. The supply voltage VDD is sampled during boot and should not vary during operation.

2. The minimum supply voltage VDD is 1.8V and should not drop below this value for reliable device operation.

Related Variants

The following components are covered by the same datasheet.

Part Number	Manufacturer	Package
CCS811	unknown	—
CCS811B-JOPR	unknown	—

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